Diodes Incorporated AP2501M8-13

Overview

AP2501M8-13 from Diodes Incorporated is a single-channel, current-limited high-side power switch optimized for USB and hot-swap applications. It features 70 mΩ typical R_DS(ON), 3.7 A typical current limit, 2 µs short-circuit response time, and integrated output discharge. It operates from 2.7 V to 5.5 V input and delivers up to 2.5 A continuous load current in MSOP-8EP packaging.

For engineers reviewing the AP2501M8-13 datasheet, AP2501M8-13 pinout, AP2501M8-13 application, or AP2501M8-13 equivalent, key selection criteria include active-low enable logic, thermal shutdown at +140°C, 7 ms FLG deglitch timing, reverse current blocking, and compatibility with heavy capacitive loads in USB-powered peripherals.

Technical Context

The AP2501M8-13 integrates a P-channel MOSFET high-side switch with current-sense FET-based over-current detection and N-channel discharge transistor. Its UVLO circuit activates at 2.0 V (rising) with 50 mV hysteresis, ensuring clean turn-on during hot-insertion events.

Thermal protection uses die-temperature sensing with +140°C trip threshold and +20°C hysteresis, enabling automatic cycling under sustained overload. The open-drain FLG output reports both over-current and over-temperature faults after 7 ms blanking to suppress false triggers from inrush transients.

Key Specifications

Pinout & Package

AP2501M8-13 is supplied in MSOP-8EP (exposed pad) package, offering enhanced thermal performance (θ_JA = 92 °C/W) versus standard MSOP-8. The exposed pad must be soldered to PCB ground plane for optimal thermal dissipation and EMI control.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side current-limited power switch applications.

Compared with AP2511M8-13, AP2501M8-13 offers direct compatibility with active-low USB suspend signaling; compared with TCK112G, it trades lower conduction loss for integrated discharge and tighter USB-compliant current limiting.

Availability

AP2501M8-13 is available at Aetrix Electronics and suitable for USB peripheral power switching, laptop docking station port control, and set-top box USB host port management requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.

Supply support for AP2501M8-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The AP2501/AP2511 family targets USB-compliant hot-swap power distribution, delivering integrated protection-current limiting, thermal shutdown, UVLO, and output discharge-in compact surface-mount packages for space-constrained designs.

FAQ

What is the maximum continuous load current supported by AP2501M8-13?

The AP2501M8-13 supports 2.5 A maximum continuous load current under recommended operating conditions (T_A ≤ +70°C at V_IN ≤ 4.1 V). At full 5.5 V input and +85°C ambient, derating applies to maintain thermal safety; design margin should include θ_JA = 92 °C/W and R_DS(ON) up to 105 mΩ.

Does AP2501M8-13 require external components for fault reporting?

No external components are required for basic fault reporting. The FLG pin provides open-drain active-low output with built-in 7 ms deglitch timing, eliminating need for RC filters or microcontroller debouncing. A pull-up resistor (typically 10 kΩ to V_CC) is required to interface with standard logic inputs.

How does the output discharge function operate during disable?

When EN is de-asserted, an internal N-MOSFET connects OUT to GND through a ~100 Ω path, discharging external output capacitance to <0.5 V within 0.6 ms (typical). This prevents floating voltages and ensures safe re-enabling, especially critical in USB hot-swap and multi-rail systems.

Can AP2501M8-13 be used in dual-purpose HDMI/MHL ports?

No. Diodes' application note explicitly advises against use in dual-purpose ports (e.g., HDMI/MHL) where output voltage may be externally driven while AP2501M8-13 is disabled. The active discharge path risks overstressing the internal N-MOSFET and draining connected device batteries unintentionally.